99418505 has 4 divisors (see below), whose sum is σ = 119302212. Its totient is φ = 79534800.

The previous prime is 99418477. The next prime is 99418549. The reversal of 99418505 is 50581499.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26759929 + 72658576 = 5173^2 + 8524^2 .

It is not a de Polignac number, because 99418505 - 2¹⁶ = 99352969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9941846 + ... + 9941855.

It is an arithmetic number, because the mean of its divisors is an integer number (29825553).

Almost surely, 2^99418505 is an apocalyptic number.

It is an amenable number.

99418505 is a deficient number, since it is larger than the sum of its proper divisors (19883707).

99418505 is a wasteful number, since it uses less digits than its factorization.

99418505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19883706.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 99418505 is about 9970.8828596068. The cubic root of 99418505 is about 463.2574469280.

The spelling of 99418505 in words is "ninety-nine million, four hundred eighteen thousand, five hundred five".